Nickel in blocks???

[70 copo]

Recall all those kids that did budget builds on 307's by overhauling them with higher compression pistons?

Neither do I.

[Lynn]

Originally Posted by 70 copo

Recall all those kids that did budget builds on 307's by overhauling them with higher compression pistons?

Neither do I.

Most 307 castings did not get hot rodded because of the small bore size, and they are all two bolt main. Although four bolt mains aren't essential, they are so prevalent and cheap, most folks would prefer to start with a 4 bolt block.

"One interesting fact regarding the Chevy 307 V8 was that it was also manufactured by GM for boat use and sold by the Outboard Marine Corporation as a high performance marine engine. The marine version of this engine produced between 235 and 245 horsepower and even used the same aluminum valve covers that were used in Corvettes and Camaro Z-28s." Quoted from this article: https://www.enginefacts.com/chevrolet307/

Don't know about "kids", but many others have use 307s as a starting point with good results.

https://www.onallcylinders.com/2021/...307-big-power/

https://www.motortrend.com/how-to/su...e-performance/

https://www.onallcylinders.com/2020/...blowing-it-up/